CATALOGUE. 205 shaped; lobes short; sepals oblong, margins slightly scarious, distinctly 2-3- keeled; style entire, the 2-lobed stigma very slightly roughened ; seeds in my specimens smooth or nearly so. (590 a hairy form.)—Southern Arizona (631, 679, 623 a); common. Ipomcea leptophylla, Torr.—Perennial; stems smooth, often erect and bushy, usually prostrate; leaves thickish, sessile, entire, acute, lance-linear, 3' long, veiny; peduncles 1-3-flowered; sepals ovate, obtuse, somewhat mucronate. CoroUa with a spreading border, IJ' across; tube IJ' long; filaments hairy below, inserted near the base of the corolla; style equalling the stamens, lobes of the stigma capitate.—Loew; probably from along the Arkansas. Ipomcea coccinea, L. (Quamoclit coccinea, Moench).—Southern Ari¬ zona (559). Convolvulus sepium, L., var. eepens. Gray (Calystegia sepium, R. Br., var. pubescens. Gray).—Zuni, N. Mex, 6,500 feet altitude (162). Convolvulus incanus, Vahl.—Twining, silky-hairy; stems terete; leaves linear-lanceolate, 9-18" long, somewhat cordate, and distinctly auricled at base; auricles diverging and recurved, entire or more or less deeply 2-3-lobed; petioles 2-6" long; peduncles 1-2^' long, bearing a pair of small bracts above the middle ; sepals villous, ovate, rather obtuse, half as long as the broadly infundibuliform hairy coroUa; lobes of corolla dis¬ tinctly hairy-tipped.—Arizona (Loew, 150 a); (482) at 5,300 feet altitude. Convolvulus longipes, Watson (American Naturalist, 7, 302).—"Gla¬ brous, glaucous, twining; leaves linear, 1 inch long or less, entire or auricled at base, petioled; peduncles elongated, 2-6 inches long, mostly strict, 2-3- bracted, usually 1-flowered; bracts linear; calyx-lobes rounded, obtuse or emarginate; corolla funnel-form, Ij inches long, yellowish.—Southern Nevada."—Plate XX. Fig. 1. Natural size. 2 Pistil 3. Cross-section of ovary. 4. Stamen. Figs. 2, 3, and 4 enlarged. EvoLVULUS* SEEICEUS, Swartz.— Spreading, procumbent, branches 4-8' long; leaves sessile, lanceolate to oblong, acute or obtuse, smooth or nearly so above, densely silky-hairy below; pedicels axillary, 1-3" long; sepals *EvoLVULUS, L.—A genus of about 70 species, natives mostly of Tropical America; distinguished from Convolvulus in having two styles, and each of these being divided into two linear-filiform stigmas ; and also by the ovary being sometimes 1 -celled from the disappearance of the partition.